Module: RuVim::Lang::Elixir

Defined in:
lib/ruvim/lang/elixir.rb

Constant Summary collapse

KEYWORDS = 
%w[
  def defp defmodule defmacro defmacrop defstruct defprotocol defimpl
  defguard defguardp defdelegate defoverridable defexception
  do end fn if else unless cond case when with for receive after
  raise rescue try catch throw
  import use alias require
  and or not in
  true false nil
  quote unquote
].freeze
KEYWORD_RE = 
/\b(?:#{KEYWORDS.join("|")})\b/
STRING_DOUBLE_RE = 
/"(?:\\.|[^"\\])*"/
STRING_SINGLE_RE = 
/'(?:\\.|[^'\\])*'/
HEREDOC_RE = 
/"""/
SIGIL_RE = 
/~[a-zA-Z](?:\(.*?\)|\[.*?\]|\{.*?\}|<.*?>|\/.*?\/|".*?"|\|.*?\|)/
ATOM_RE = 
/:\w+|:"(?:\\.|[^"\\])*"/
MODULE_RE = 
/\b[A-Z]\w*(?:\.[A-Z]\w*)*/
NUMBER_RE = 
/\b(?:0[xXoObB][\da-fA-F_]+|\d[\d_]*(?:\.[\d_]+)?(?:[eE][+-]?\d+)?)\b/
COMMENT_RE = 
/#.*/
VARIABLE_RE = 
/@\w+/
INDENT_OPEN_RE = 
/\b(?:do|fn)\s*(?:->)?\s*$/
INDENT_CLOSE_RE = 
/\A\s*end\b/
INDENT_MID_RE = 
/\A\s*(?:else|rescue|catch|after)\b/
DEDENT_TRIGGERS = 
{
  "d" => /\A(\s*)end\z/,
  "e" => /\A(\s*)(?:else|rescue)\z/,
  "h" => /\A(\s*)catch\z/,
  "r" => /\A(\s*)after\z/
}.freeze

Class Method Summary collapse

Class Method Details

.calculate_indent(lines, target_row, shiftwidth) ⇒ Object 



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# File 'lib/ruvim/lang/elixir.rb', line 41

def calculate_indent(lines, target_row, shiftwidth)
  depth = 0
  (0...target_row).each do |row|
    line = lines[row].to_s.strip
    next if line.empty? || line.start_with?("#")

    depth += 1 if line.match?(/\b(?:do|fn)\b/) || line.match?(/->$/)
    depth -= 1 if line.match?(/\Aend\b/)
  end

  target_line = lines[target_row].to_s.strip
  depth -= 1 if target_line.match?(INDENT_CLOSE_RE) || target_line.match?(INDENT_MID_RE)
  depth = 0 if depth < 0
  depth * shiftwidth
end

.color_columns(text) ⇒ Object 



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# File 'lib/ruvim/lang/elixir.rb', line 65

def color_columns(text)
  cols = {}
  Highlighter.apply_regex(cols, text, STRING_DOUBLE_RE, Highlighter::STRING_COLOR)
  Highlighter.apply_regex(cols, text, STRING_SINGLE_RE, Highlighter::STRING_COLOR)
  Highlighter.apply_regex(cols, text, ATOM_RE, Highlighter::CONSTANT_COLOR)
  Highlighter.apply_regex(cols, text, KEYWORD_RE, Highlighter::KEYWORD_COLOR)
  Highlighter.apply_regex(cols, text, MODULE_RE, Highlighter::CONSTANT_COLOR)
  Highlighter.apply_regex(cols, text, VARIABLE_RE, Highlighter::VARIABLE_COLOR)
  Highlighter.apply_regex(cols, text, NUMBER_RE, Highlighter::NUMBER_COLOR)
  Highlighter.apply_regex(cols, text, SIGIL_RE, Highlighter::STRING_COLOR)
  Highlighter.apply_regex(cols, text, COMMENT_RE, Highlighter::COMMENT_COLOR, override: true)
  cols
end

.dedent_trigger(char) ⇒ Object 



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# File 'lib/ruvim/lang/elixir.rb', line 61

def dedent_trigger(char)
  DEDENT_TRIGGERS[char]
end

.indent_trigger?(line) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ruvim/lang/elixir.rb', line 57

def indent_trigger?(line)
  line.to_s.rstrip.match?(INDENT_OPEN_RE)
end